If you don’t have access to the ccm anymore, cisco provides a neat way to reset the password.
Just login with pwrecovery on the console and password is pwreset.
Then you can reset the admin and secure password.
Here is the corresponding link:
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00806c3e28.html